Sounds like a good project to do with kids, but once it's done, you have a big clunky clock. Maybe the oscilloscope is more interesting as an oscilloscope than a clock. But again it's not about the final product....

This is really a very good use of old oscilloscope (If you still have working old oscilloscope!!!). The webpage explains it in a very nice manner along with the required firmware for a specific oscilloscope model and brand listed. Yes if more people will contribute the will of supporting models will go on increasing!!